Very nice work on this guide! I'm playing through this game for the 3 and 1/2 time now, for the final run on impossible. I'm right at the leviathan, and I keep running out of ammo, so I'm trying out new things to get it done. I must say, the pictures and extensive break-down of each level is very good. As it has been said before, I find this to be one of (if not THE) best guide on this site. Keep up the good work, and hopefully I'll be able to beat this stupid boss on impossible. >_< Thank you for your tips and guide, and I hope that you will make another guide sometime in the future.